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      1 /*
      2  * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "AppendNodeCommand.h"
     28 
     29 #include "AXObjectCache.h"
     30 #include "htmlediting.h"
     31 
     32 namespace WebCore {
     33 
     34 AppendNodeCommand::AppendNodeCommand(PassRefPtr<ContainerNode> parent, PassRefPtr<Node> node)
     35     : SimpleEditCommand(parent->document())
     36     , m_parent(parent)
     37     , m_node(node)
     38 {
     39     ASSERT(m_parent);
     40     ASSERT(m_node);
     41     ASSERT(!m_node->parentNode());
     42 
     43     ASSERT(m_parent->rendererIsEditable() || !m_parent->attached());
     44 }
     45 
     46 static void sendAXTextChangedIgnoringLineBreaks(Node* node, AXObjectCache::AXTextChange textChange)
     47 {
     48     String nodeValue = node->nodeValue();
     49     unsigned len = nodeValue.length();
     50     // Don't consider linebreaks in this command
     51     if (nodeValue == "\n")
     52       return;
     53 
     54     node->document()->axObjectCache()->nodeTextChangeNotification(node->renderer(), textChange, 0, len);
     55 }
     56 
     57 void AppendNodeCommand::doApply()
     58 {
     59     if (!m_parent->rendererIsEditable() && m_parent->attached())
     60         return;
     61 
     62     ExceptionCode ec;
     63     m_parent->appendChild(m_node.get(), ec);
     64 
     65     if (AXObjectCache::accessibilityEnabled())
     66         sendAXTextChangedIgnoringLineBreaks(m_node.get(), AXObjectCache::AXTextInserted);
     67 }
     68 
     69 void AppendNodeCommand::doUnapply()
     70 {
     71     if (!m_parent->rendererIsEditable())
     72         return;
     73 
     74     // Need to notify this before actually deleting the text
     75     if (AXObjectCache::accessibilityEnabled())
     76         sendAXTextChangedIgnoringLineBreaks(m_node.get(), AXObjectCache::AXTextDeleted);
     77 
     78     ExceptionCode ec;
     79     m_node->remove(ec);
     80 }
     81 
     82 } // namespace WebCore
     83